ScienceDaily (125)

Losing sleep over climate change

A new study of US data suggests a sleep-deprived planet by century's end. Researchers show that unusually warm nights can harm human sleep and that the poor and elderly are most affected. Rising temperatures will make sleep loss more severe.

Mind-controlled device helps stroke patients retrain brains to move paralyzed hands

Stroke patients who learned to use their minds to open and close a plastic brace fitted over their paralyzed hands gained some ability to control their own hands when they were not wearing the brace, according to a new study. The participants, all of whom had moderate to severe paralysis, showed ...

Chemical array draws out malignant cells to guide individualized cancer treatment

Melanoma is a particularly difficult cancer to treat once it has metastasized, spreading throughout the body. Researchers are using chemistry to find the deadly, elusive malignant cells within a melanoma tumor that hold the potential to spread. Once found, the stemlike metastatic cells can be ...

Conch shells may inspire better helmets, body armor

Engineers have uncovered the secret to the exceptional toughness of conch shells, and say the same principles can be used for body armor and helmets.

'Tiny clocks' crystallize understanding of meteorite crashes

Scientists are using new imaging techniques to measure the atomic nanostructure of ancient crystal fragments at meteorite impact sites. The end goal? To understand when impacts ended and life began.

Dog skull study reveals genetic changes linked to face shape

A study of dog DNA has revealed a genetic mutation linked to flat face shapes such as those seen in pugs and bulldogs.

Bioelectricity new weapon to fight dangerous infection

Changing natural electrical signaling in non-neural cells improves innate immune response to bacterial infections and injury. Tadpoles that received therapeutics, including those used in humans for other purposes, which depolarized their cells had higher survival rates when infected with E. coli ...

New cellular target may put the brakes on cancer's ability to spread

Researchers have discovered a biochemical signaling process that causes densely packed cancer cells to break away from a tumor and spread the disease elsewhere in the body.

Sweetening connection between cancer and sugar

Scientists have found that some types of cancers have more of a sweet tooth than others.

Century-old drug as potential new approach to autism

In a small, randomized Phase I/II clinical trial , researchers say a 100-year-old drug called suramin, originally developed to treat African sleeping sickness, was safely administered to children with autism spectrum disorder , who subsequently displayed measurable, but transient, improvement in ...

Diesel pollution linked to heart damage

Diesel pollution is linked with heart damage, according to research presented today at EuroCMR 2017.

DNA ladders: Inexpensive molecular rulers for DNA research

New license-free tools will allow researchers to estimate the size of DNA fragments for a fraction of the cost of currently available methods. The tools, called a DNA ladders, can gauge DNA fragments ranging from about 50 to 5,000 base pairs in length.

Knowledge gap on the origin of sex

There are significant gaps in our knowledge on the evolution of sex, according to a research review on sex chromosomes. Even after more than a century of study, researchers do not know enough about the evolution of sex chromosomes to understand how males and females emerge.

Isolated Greek villages reveal genetic secrets that protect against heart disease

A genetic variant that protects the heart against cardiovascular disease has been discovered. The cardioprotective variant was found in an isolated Greek population, who are known to live long and healthy lives despite having a diet rich in animal fat.

Fruit flies journey to International Space Station to study effects of zero gravity on the heart

Researchers have announced that six boxes of fruit flies will travel to the International Space Station to study the impact of weightlessness on the heart. The fruit flies are scheduled to launch on June 1, 2017, from NASA's Kennedy Space Center and will travel to the ISS via a SpaceX Dragon ...

'Authentic' teachers are better at engaging with their students

Teachers who have an authentic teaching style are more positively received by their students, according to new research.

Balancing rights and responsibilities in insurers' access to genetic test results

Researchers have compared the regulation of life insurers' use of genetic information in the UK, Canada, and Australia.

Infections, other factors raise risk of pregnancy-related stroke in women with preeclampsia

Infections, chronic high blood pressure and bleeding or clotting disorders increase the risk of pregnancy-related stroke in women with preeclampsia. Although pregnancy-related stroke is rare, women with preeclampsia are at higher risk of stroke during pregnancy and postpartum.

Government transparency limited when it comes to America's conserved private lands

A new study examined why private-land conservation data is sometimes inaccessible and found that limited capacity within some federal agencies as well as laws prohibiting others from disclosing certain information are to blame.

Changing climate could have devastating impact on forest carbon storage

Biologists have shown what could be a startling drop in the amount of carbon stored in the Sierra Nevada mountains due to projected climate change and wildfire events.

The 'ideal' teacher? It's all in your mind

A study leverages the unvarnished opinions of Redditors to further our understanding of what makes a good educator.

Tiny shells indicate big changes to global carbon cycle

Experiments with tiny, shelled organisms in the ocean suggest big changes to the global carbon cycle are underway, according to a new study.

IVF babies do not have lower cognitive skills than naturally conceived children

Researchers analysed data of hundreds of UK children who had been born through IVF or ICSI , testing the same groups of children every few years up to the age of 11. They found a positive association between artificial conception and cognitive development when a child was between the ages of three ...

Look at Eva, 4 months old and standing

Both the literature and practice indicate that children can stand without support starting at around 9 months old. Yet, with practice, children can stand without support even before they are 4 months old. This is much earlier than has been reported in the literature.

'Drastically' higher resolution to your TV and smartphone

By developing a way to tune the color of individual pixels, researchers have eliminated the need for subpixels -- allowing a greater density of pixels and much higher resolution for video displays.

Extreme Jupiter weather and magnetic fields

New observations about the extreme conditions of Jupiter's weather and magnetic fields by astronomers have contributed to the revelations and insights coming from the first close passes of Jupiter by NASA's Juno mission.

Multiscale modeling reveals key events during early atherosclerotic plaque development

A new computational modeling technique could indicate when atherosclerotic plaques will likely undergo rapid growth, reports a new study.

Mountain honey bees have ancient adaptation for high-altitude foraging

Mountain-dwelling East African honey bees have distinct genetic variations compared to their savannah relatives that likely help them to survive at high altitudes, report researchers.

Viral protein may help chickenpox virus spread within the body

The virus that causes chickenpox -- varicella zoster virus -- possesses a protein that could enhance its ability to hijack white blood cells and spread throughout the body, according to new research.

A new way to slow cancer cell growth

Researchers have identified a new way to potentially slow the fast-growing cells that characterize all types of cancer. By removing a specific protein from cells, they were able to slow the cell cycle, which is out of control in cancer. The findings were made in kidney and cervical cancer cells and ...

Why the Sumatra earthquake was so severe

An international team of scientists has found evidence suggesting the dehydration of minerals deep below the ocean floor influenced the severity of the Sumatra earthquake, which took place on Dec. 26, 2004.

US nuclear regulators greatly underestimate potential for nuclear disaster

The US Nuclear Regulatory Commission relied on faulty analysis to justify its refusal to adopt a critical measure for protecting Americans from nuclear-waste fires at dozens of reactor sites around the country, according to a recent article. Radioactivity from such a fire could force approximately 8 ...

Magnetic switch turns strange quantum property on and off

A research team has developed the first switch that turns on and off a quantum behavior called the Berry phase. The discovery promises to provide new insight into the fundamentals of quantum theory and may lead to new quantum electronic devices.

Juno mission to Jupiter delivers first science results

NASA's Juno mission is rewriting what scientists thought they knew about Jupiter specifically, and gas giants in general, according to a pair of Science papers released today. The Juno spacecraft has been in orbit around Jupiter since July 2016, passing within 3,000 miles of the equatorial ...

The big star that couldn't become a supernova

For the first time in history, astronomers have been able to watch as a dying star was reborn as a black hole. It went out with a whimper instead of a bang.

Ancient genetic markers in sockeye salmon can help manage healthier fish stocks

A recent study identifies new genetic markers in sockeye salmon that can help improve management of fish populations.

Predicting threats to rainforests: New approach

A new study highlights novel approaches to tackling deforestation. The team focused their research on Borneo, an island that has lost a staggering 30 percent of its forest since the 1970s and is among the most biodiverse and threatened on the planet. The loss of Bornean forests threatens species ...

New species of bus-sized fossil marine reptile unearthed in Russia

A new species of a fossil pliosaur has been found in Russia and profoundly change how we understand the evolution of the group, says an international team of scientists.

Marmoset monkeys learn to call the same way human infants learn to babble

Human social groups have a strange tendency to share responsibility for taking care of infants; parents, older siblings, and other adult relatives all help to nurture babies. The only other primates that take care of infants this way are marmosets, a group of small, highly social monkeys from South ...

Ancient DNA evidence shows hunter-gatherers and farmers were intimately linked

In human history, the transition from hunting and gathering to farming is a significant one. As such, hunter-gatherers and farmers are usually thought about as two entirely different sets of people. But researchers reporting new ancient DNA evidence show that in the area we now recognize as Romania, ...

Brain images reveal roots of kids' increasing cognitive control

As children age into adolescence and on into young adulthood, they show dramatic improvements in their ability to control impulses, stay organized, and make decisions. Those 'executive functions' of the brain are key factors in determining outcomes, including educational success, drug use, and ...

In fruit fly and human genetics, timing is everything

Using fruit flies, researchers have discovered a cascade of molecular signals that program gene activity to drive the fly from one stage of maturation to the next, like a baby turning into an adult. Part of this programming involves alterations to the way DNA is packaged. Those alterations open ...

Size-sensing protein controls glucose uptake and storage in fat cells

Researchers have discovered that a molecule which can sense the swelling of fat cells also controls a signaling pathway that allows fat cells to take up and store excess glucose. Mice missing this protein, known as SWELL1, gain less weight than normal mice on a high-fat diet, but also develop ...

Tai chi significantly reduces depression symptoms in Chinese-Americans

A new study finds that a 12-week program of instruction and practice of the Chinese martial art tai chi led to significantly reduced symptoms of depression in Chinese-Americans not receiving any other treatments.

Solving the riddle of the snow globe

A new study finds the sedimentation of asymmetric objects in liquid is very different from that of symmetrical objects like spheres. The research may have practical applications in improving water treatment and industrial processes.

Unveiling the quantum necklace

The quantum world is both elegant and mysterious. It is a sphere of existence where the laws of physics experienced in everyday life are broken -- particles can exist in two places at once, they can react to each other over vast distances, and they themselves seem confused over whether they are ...

New way to control light with electric fields

Researchers have discovered a technique for controlling light with electric fields.

Ineffective antibiotics form strong teams against deadly super bacteria

Combinations of three antibiotics -- that are each ineffective against superbugs when used alone -- are capable of eradicating two of the six ESKAPE pathogens when delivered together, scientists have discovered.

Scientists borrow from electronics to build circuits in living cells

Synthetic biology researchers have demonstrated a new method for digital information processing in living cells, analogous to the logic gates used in electric circuits. The circuits are the largest ever published to date in eurkaryotic cells and a key step in harnessing the potential of cells as ...

High pressure key to lighter, stronger metal alloys, scientists find

Subjecting complex metal mixtures called high-entropy alloys to extremely high pressures could lead to finer control over the arrangement of their atoms, which in turn can result in more desirable properties.